Fig. 5
From: Normal patellofemoral kinematic patterns during daily activities in dogs
Patellofemoral proximodistal translation over the course of femorotibial flexion-extension. Each color represents a daily activity of dogs and the proximodistal patellofemoral kinematic properties are compared over the course of femorotibial flexion-extension. Proximodistal translation measurements of the patella relative to the femur in mm. For the x-axis, higher values indicate greater femorotibial extension. For the y-axis, higher values indicate greater proximal translation of the patella, where the patellar origin is displaced more proximally to the femoral origin